remove version in doc names, change release_notes to markdown format (#280)

RELEASE_NOTES

-==============================================================
-Apache IoTDB (incubating) 0.8.0
-==============================================================
-
-This is the first official release of Apache IoTDB after joining the Incubator.
-
-New Features
-------------
-
-IOTDB-5     Support data deletion
-IOTDB-21    Add ChunkGroup offset information in ChunkGroupMetaData
-IOTDB-25    Add some introduction for JMX MBean Monitor in user guide
-IOTDB-29    Multiple Exceptions when reading empty measurements from TsFileSequenceReader
-IOTDB-36    [TsFile] Enable recover data from a incomplete TsFile and continue to write
-
-Incompatible changes
---------------------
-
-Miscellaneous changes
----------------------
-
-Known Issues
-------------
-
-Bug Fixes
----------
-
-IOTDB-7     OpenFileNumUtilTest failed
-IOTDB-16    invalid link on https://iotdb.apache.org/#/Documents/Quick Start
-IOTDB-17    Need to update chapter Start of https://iotdb.apache.org/#/Documents/Quick Start
-IOTDB-18    IoTDB startup script does not work on openjdk11
-IOTDB-19    Fail to start start-server.sh script on Ubuntu 14.04/Ubuntu 16.04
-IOTDB-22    BUG in TsFileSequenceReader when reading tsfile
-IOTDB-24    DELETION error after restart a server
-IOTDB-26    Return error when quit client
-IOTDB-27    Delete error message
-IOTDB-30    flush timeseries cause select to returns "Msg:null"
-IOTDB-31    Cannot set float number precision
-

RELEASE_NOTES.md

+# Apache IoTDB (incubating) 0.8.0
+
+This is the first official release of Apache IoTDB after joining the Incubator.
+
+## Outline
+
+* New Features
+* Incompatible changes
+* Miscellaneous changes
+* Known Issues
+* Bug Fixes
+
+## New Features
+
+* IOTDB-1     Add Aggregation query
+* IOTDB-4     Asynchronously force sync WAL periodically
+* IOTDB-5     Support data deletion
+* IOTDB-11    Support start script for jdk 11 on Windows OS
+* IOTDB-18    Improve startup script compatible for jdk11
+* IOTDB-36    [TsFile] Enable recover data from a incomplete TsFile and continue to write
+* IOTDB-37    Add WAL check tool script
+* IOTDB-51    Update post-back module to synchronization module
+* IOTDB-59    Support GroupBy query
+* IOTDB-60    Support Fill function when query
+* IOTDB-73    Add REGULAR encoding method for data with fixed frequency
+* IOTDB-80    Support custom export file name
+* IOTDB-81    Update travis for supporting JDK11 on Windows
+* IOTDB-83    Add process bar for import script and show how many rows have been exported
+* IOTDB-91    Improve tsfile-spark-connector to support spark-2.4.3
+* IOTDB-93    IoTDB Calcite integration
+* IOTDB-109   Support appending data at the end of a completed TsFile
+* IOTDB-122   Add prepared statement in JDBC
+* IOTDB-123   Add documents in Chinese
+* IOTDB-130   Dynamic parameters adapter
+* IOTDB-134   Add default parameter for client starting script
+* Add read-only mode of IoTDB
+* New storage engine with asynchronously flush and close data file
+* Adding english documents
+* Supporting travis + window + jdk8
+* Add skipping all UTs: maven integration-test -DskipUTS=true
+* Enable users define the location of their thrift compiler
+* Add example module
+* Add a log appender: put info, warn, error log into one file and disable log_info by default
+* Recover when resource file does not exist while tsfile is complete
+
+
+## Incompatible changes
+
+If you use the previous unofficial version 0.7.0. It is incompatible with 0.8.0.
+
+
+## Miscellaneous changes
+
+* IOTDB-21    Add ChunkGroup offset information in ChunkGroupMetaData
+* IOTDB-25    Add some introduction for JMX MBean Monitor in user guide
+* IOTDB-29    Multiple Exceptions when reading empty measurements from TsFileSequenceReader
+* IOTDB-39    Add auto repair functionality for RestorableTsFileIOWriter
+* IOTDB-45    Update the license in IoTDB
+* IOTDB-56    Faster getSortedTimeValuePairList() of Memtable
+* IOTDB-62    Change log level from error to debug in SQL parser
+* IoTDB-63:   Use TsFileInput instead of FileChannel as the input parameter of some functions
+* IOTDB-76    Reformat MManager.getMetadataInString() in JSON format
+* IOTDB-78    Make unsequence file format more similar with TsFile
+* IOTDB-95    Keep stack trace when logging or throwing an exception
+* IOTDB-117   Add sync documents
+* Modify ASF header for each file and add related maven plugin
+* Add IoTDB env script test
+* Add sync function for jdbc server to close
+* Add cache directories for download jars and sonar plugin of maven in travis
+* Add partition start and end offset constraints when loading ChunkGroupMetaData
+* Check when creating Storage group
+* Try to release memory asap in ReadOnlyMemChunk
+* Add more physical plan serializer
+* Move all generated tsfiles for test into the target folder
+* Make TsFileWriter as AutoClosable
+* Print apache-rat violation result on console
+* Update multi dir avoid disk is full
+* Simplify Path construction
+* Separate documents into different chapter folders
+* Suppress mvn log in travis
+* Add mvn -B in travis
+
+
+## Known Issues
+
+* IOTDB-20    Need to support UPDATE
+* IOTDB-124   Lost timeseries info after restart IoTDB
+* IOTDB-125   [potential] a concurrency conflict may occur when a delete command and insertion command appears concurrently
+* IOTDB-126   IoTDB will not be closed immediately after run 'stop-server.sh' script
+* IOTDB-127   Chinese version documents problems
+
+
+## Bug Fixes
+
+* IOTDB-2     Maven Test failed before run mvn package -Dmaven.test.skip=true
+* IOTDB-7     OpenFileNumUtilTest failed
+* IOTDB-15    Fail to install IoTDB on Ubuntu 14.04
+* IOTDB-16    Invalid link on https://iotdb.apache.org/#/Documents/Quick Start
+* IOTDB-17    Need to update chapter Start of https://iotdb.apache.org/#/Documents/Quick Start
+* IOTDB-18    IoTDB startup script does not work on openjdk11
+* IOTDB-19    Fail to start start-server.sh script on Ubuntu 14.04/Ubuntu 16.04
+* IOTDB-22    BUG in TsFileSequenceReader when reading tsfile
+* IOTDB-24    DELETION error after restart a server
+* IOTDB-26    Return error when quit client
+* IOTDB-27    Delete error message
+* IOTDB-30    Flush timeseries cause select to returns "Msg:null"
+* IOTDB-31    Cannot set float number precision
+* IOTDB-34    Invalid message for show storage group
+* IOTDB-44    Error message in server log when select timeseries
+* IOTDB-49    Authorizer module outputs too many debug log info
+* IOTDB-50    DataSetWithoutTimeGenerator's initHeap behaves wrongly
+* IOTDB-52    Client doesn't support aggregate
+* IOTDB-54    Predicates doesn't take effect
+* IOTDB-67    ValueDecoder reading new page bug
+* IOTDB-70    Disconnect from server when logging in fails
+* IOTDB-71    Improve readPositionInfo
+* IOTDB-74    THe damaged log will be skipped if it is the only log
+* IOTDB-79    Long term test failed because of the version control of deletion function
+* IOTDB-81    Fix Windows OS environment for Travis-CI
+* IOTDB-82    File not closed in PageHeaderTest and cause UT on Windows fails
+* IOTDB-84    Out-of-memory bug
+* IOTDB-94    IoTDB failed to start client since the required jars are not in the right folder
+* IOTDB-96    The JDBC interface throws an exception when executing the SQL statement "list user"
+* IOTDB-99    List privileges User <username> on <path> cannot be used properly
+* IOTDB-100   Return error message while executing sum aggregation query
+* IOTDB-103   Does not give a hint when encountering unsupported data types
+* IOTDB-104   MManager is incorrectly recovered when system reboots
+* IOTDB-108   Mistakes in documents
+* IOTDB-110   Clients inserts data normally even if there is no space left on the disk
+* IOTDB-118   When the disk space is full, the storage group is created successfully
+* IOTDB-121   A bug of query on value columns
+* IOTDB-128   Probably a bug in iotdb official website
+* IOTDB-129   A bug in restoring incomplete tsfile when system restart
+* IOTDB-131   IoTDB-Grafana module error when getting the timeseries list from Grafana
+* IOTDB-133   Some content is mistaken for links
+* System memory check failure in iotdb-env.sh
+* Time zone bug in different region
+* DateTimeUtilsTest UT bug
+* Problem discovered by Sonar
+* Openjdk11 + linux11 does not work on travis
+* Start JDBC service too slowly
+* JDBC cannot be closed
+* Close bug in sync thread
+* Bug in MManager to get all file names of a path
+* Version files of different storage groups are placed into the same place
+* Import/export csv script bug
+* Log level and stack print in test
+* Bug in TsFile-Spark-Connector
+* A doc bug of QuickStart.md
\ No newline at end of file

docs/Documentation-CHN/OtherMaterial-ReleaseNotesV0.7.0.md

-<!--
-
-    Licensed to the Apache Software Foundation (ASF) under one
-    or more contributor license agreements.  See the NOTICE file
-    distributed with this work for additional information
-    regarding copyright ownership.  The ASF licenses this file
-    to you under the Apache License, Version 2.0 (the
-    "License"); you may not use this file except in compliance
-    with the License.  You may obtain a copy of the License at
-
-        http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing,
-    software distributed under the License is distributed on an
-    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-    KIND, either express or implied.  See the License for the
-    specific language governing permissions and limitations
-    under the License.
-
--->
-
-### v0.7.0 Release Notes
-
-Coming Soon.
\ No newline at end of file

docs/Documentation/OtherMaterial-ReleaseNotesV0.7.0.md

-<!--
-
-    Licensed to the Apache Software Foundation (ASF) under one
-    or more contributor license agreements.  See the NOTICE file
-    distributed with this work for additional information
-    regarding copyright ownership.  The ASF licenses this file
-    to you under the Apache License, Version 2.0 (the
-    "License"); you may not use this file except in compliance
-    with the License.  You may obtain a copy of the License at
-
-        http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing,
-    software distributed under the License is distributed on an
-    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-    KIND, either express or implied.  See the License for the
-    specific language governing permissions and limitations
-    under the License.
-
--->
-
-<!-- TOC -->
-
-## Outline
-
-- v0.7.0 Release Notes
-    - Features
-        - IoTDB
-        - IoTDB-Transfer-Tool
-    - Bugfixes
-        - IoTDB
-    - System Organization
-
-<!-- /TOC -->
-### v0.7.0 Release Notes
-
-Add postback tools, multi-path data storage mechanism, ```SHOW TIMESERIES / STORAGE GROUP``` SQL extended expressions, and other new features. Fix several issues in version 0.6.0. Improve system stability.
-
-#### Features
-
-##### IoTDB
-
-* Add ```Show Storage Group``` SQL statement, support for displaying storage groups.
-* Enhance ```Show Timeseries``` SQL, support for displaying time series information under different prefix paths.
-* Add multi-path data storage mechanism for distributed storage, allowing different data files (write ahead logs, metadata files, etc.) to be stored in different paths.
-* Add data directory configuration which allows data files to be stored in different paths, facilitating the use of multiple disks to store data files.
-
-##### IoTDB-Transfer-Tool
-
-* Added IoTDB data postback module to provide users with end-to-cloud timed data file postback function.
-
-#### Bugfixes
-##### IoTDB
-* Fix the problem that the IoTDB shutdown script does not work
-* Fix the problem that the IoTDB installation path does not support spaces in Windows environment.
-* Fix the problem that the system cannot be restarted after merging Overflow data
-* Fix the problem that the permission module missing the ALL keyword
-* Fixed an issue that quotation marks in strings were not supported when querying TEXT type data
-
-#### System Organization
-* Further improve system stability
\ No newline at end of file